2001/09/30 by K. B. Efetov, A. Tschersich · 3 citations
Physics and Astronomy · #Quantum and electron transport phenomena #Quantum many-body systems #Theoretical and Computational Physics #cond-mat.dis-nn #cond-mat.mes-hall
paper · pdf · doi:10.1209/epl/i2002-00166-9
published as Europhys. Lett., 59, pp. 114-120 (2002) · 9 pages, a mistake is corrected and several formulae added
arxiv created 2002/04/12 · openalex publication_date 2002/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/30
We consider interaction effects in a granular normal metal at not very low temperatures. Assuming that all weak localization effects are suppressed by the temperature we replace the initial Hamiltonian by a proper functional of phases and study the possibility for a phase transition depending on the tunneling conductance g . It is demonstrated for any dimension that, while at small g the conductivity decays with temperature exponentially, its temperature dependence is logarithmic at large g . The formulae obtained are compared with an existing experiment and a good agreement is found.